RU2385992C1 - Cellular piling wall - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: in piling wall made of metal elements of double-tee shaped cross section, every of which has two shelves installed symmetrically versus axis of wall and parallel to it, and in the centre they are rigidly fixed to each other by means of wall arranged to shelves at the right angle, and at longitudinal edges of each shelf there are lock elements arranged, either female - in the form of cartridge, or male - in the form of cams, and connection of those elements by means of cams inserting into cartridges provides for combination of adjacent metal elements into piling wall with creation of cells - cavities closed in plan, on one shelf of each metal elements there are two cartridges arranged, and on the opposite shelf - here are two cams, besides, centres of cams are arranged at the lines that are parallel to axis of metal element and passing through cartridges in sections with maximum height of cavity, and all lock elements are arranged at internal surfaces of shelves inverted to axis of piling wall, at the same time ratio of shelf width to width of metal element wall is maintained within the limits of 0.6-0.8 in the metal element with ratio of shelf thickness to its width of 0.020-0.0225, and of 0.55-0.7 in metal element with ratio of shelf thickness to its width of 0.0225-0.025. At the same time cells with lock joints installed in them for provision of water impermeability and protection of locking elements against corrosion are filled with concrete or another hardening material.

EFFECT: arrangement of piling wall with bearing capacity that equals available solutions, provided by certain parametres of double-tee elements and parametres of lock joints, which make it possible to reduce its specific metal intensity, and provision of piling wall lock joints protection against erosion effect of sea wave.

2 cl, 2 dwg, 1 tbl

Description

The invention relates to the field of construction of retaining walls from steel sheet pile, mainly to the construction of hydraulic structures: berthing, protective, ship-raising, shore-protecting, as well as bridge supports.

Structures with load-bearing steel sheet pile walls are widespread due to their high efficiency when building on water in a wide range of soil conditions, cost-effectiveness in terms of resources, less sensitivity to overloads compared to other known structures (Smirnov G.N. et al. Ports and port facilities Moscow, Stroyizdat, 1993, p. 371-374).

Known sheet pile wall, erected from undulating in the plan steel sheet pile elements, each of which has shelves located on different sides of the axis of the wall parallel to it with an offset along this axis relative to adjacent shelves and connected by transverse walls. The walls are arranged at an obtuse angle to the shelves with the formation of extreme half-walls in each sheet pile element, having a cam and a clip, respectively, on their free edges, forming locking joints of the sheet pile elements in the wall, each clip being located on the external and each cam on the inner surface of the corresponding half-walls (RU 2151236 C1, cl E02D 5/08, published on 06/20/2000).

This design can be implemented in the range of the moment of resistance of the wall section up to 8-10 × 10 ³ cm ³ / m. For more powerful walls, the wavy shape of the section becomes technologically unattainable due to the need to significantly increase the height of the section, the length of this wave, the thickness of the wall and shelves. In walls with a resistance moment in excess of 10 × 10 ³ cm ³ / m, an effective solution is cellular structures constructed from I-beam sheet piling elements.

The closest in technical essence to the analogue of the invention is a sheet pile wall constructed of I-beam elements, each of which has two shelves, located symmetrically with respect to the axis of the wall and in the center, rigidly interconnected by a wall located at right angles to the shelves, and the shelves on their outer side are made of triangular-shaped protrusions intended for connection with locking elements put on the edges of the shelves - rods in which cavities are made for odki shelves and protrusions thereby combining elements between adjacent I-a (US 2018625, cl. 405-277, 22.10.1935).

The disadvantage of this design of the sheet pile wall is the location of the locking joints of the I-beams behind the outer face of the wall, i.e. in the zone where they are exposed to the most intense effects of waves, flows, deposits, which negatively affects their durability, not excluding the possibility of damage, both during the construction of the wall and during its operation, as well as due to the location of critical castle joints in the section zone with a large moment of inertia.

The objective of the present invention is to reduce the specific metal consumption of a sheet pile wall with equal bearing capacity (bending stiffness) with respect to known solutions, which is ensured by certain parameters of I-beam elements and parameters of locking joints at a given bearing capacity, and to provide protection for locking joints of a sheet pile wall from erosion.

This problem is solved in that in a sheet pile wall formed of metal elements of an I-beam cross-sectional shape, each of which has two shelves located symmetrically with respect to the axis of the wall and parallel to it and in the center, rigidly interconnected by a wall located at right angles to the shelves, and on the longitudinal edges of each shelf are made enclosing - in the form of clips or integral - in the form of cams locking elements, the connection of which through the establishment of cams into clips made the union of adjacent meta Piling-crystal elements in the wall to form in it in terms of closed cells - cavities; two cages are made on one of the shelves of each metal element, and two cams on the opposite shelf, the centers of the cams are located on lines parallel to the axis of the metal element and passing through the cages in sections with a maximum cavity height, and all the locking elements are located on the inside facing to the axis of the sheet pile wall on the surfaces of the shelves, while the ratio of the width of the shelf to the width of the wall of the metal element is maintained in the range from 0.6 to 0.8 for the metal element with the ratio of the thickness of the shelf to its width e in the range from 0.020 to 0.0225 and from 0.55 to 0.7 for a metal element with a ratio of the thickness of the shelf to its width in the range from 0.0225 to 0.025. At the same time, at least part of the cells and / or cavities in which the locking elements are located are filled with hardening material, for example concrete.

The parameters of the ratio of the width of the shelf to the width of the wall for metal elements in the form of I-beams is within the limits determined by Table 1 depending on the index ν of the stiffness of the shelf, characterized by the ratio of its thickness to width.

Table 1 Range of indicator values Relationship Value Range ν - shelf stiffness shelf width to wall width 0.020-0.0225 0.6-0.8 0.0225-0.025 0.55-0.7

The invention is illustrated by drawings, where

- figure 1 shows a section of a tongue-and-groove wall (top view) located along axis 1 and assembled from I-beam elements 2;

- figure 2 - graphs of the specific metal intensity of the sheet pile wall on the ratio of the dimensions of the shelf and the wall.

The I-beam elements 2 of the groove wall located along the axis 1 have shelves 3a and 3b located symmetrically with respect to the axis of the wall and parallel to it, and walls 4 located at right angles to the shelves and rigidly connected to them at points in the center of the shelves. Along the longitudinal edges of the shelves 3a, the locking elements are made - clips 5, and the shelves 3b - locking elements - cams 6. The cams are screwed into the clips during the assembly of the sheet pile wall, the I-elements are combined into a single wall structure, while cells 7 of increased bending stiffness are formed in it , and the locking elements 5 and 6 as described above are located in these cells. If necessary, in order to achieve a watertight wall and protect the castle joints, cells 7 can be filled (with concrete or other material).

To solve the problem of the effective use of metal in the construction of a sheet pile wall of the required bearing capacity, an experimental design of I-elements was carried out, the results of which (for a wall with a specific resistance moment of 180 cm ³ / cm) are shown in table 2, on the basis of which the graphs of figure 2 are constructed and identified the dependence of the specific metal consumption of the wall of the considered construction on the ratio of the sizes of the shelves and the wall of the I-beam elements, namely, on the ratio of the width of the shelf to the width of the wall and the stiffness index ν shelves. In the graphs of FIG. 2, line 1 expresses this dependence for ν = 0.027, line 2 for ν = 0.025, line 3 for ν = 0.023. The selected region 4 for given values of ν is the region of optimal values of the ratio of the width of the shelf to the width of the wall at which the minimum specific metal consumption of the tongue and groove wall is achieved.

Thus, it was found that in order to achieve effective indicators of the specific metal consumption of a sheet pile wall, the ratio of the width of the shelf to the width of the wall for I-beams should be kept within the limits determined by Table 1.

table 2 The parameters of the I-beams forming a wall with w - 180 cm ³ / cm Section height, h Width of the shelf, b _f Shelf thickness, b _f Parameter, ν Wall Width, b _w Wall thickness, t _w B _f / b _w ratio Specific gravity, m 1118 522 12 0,023 1094 13 0.48 402.44 1087 565 13 0,023 1061 13 0.53 395.60 1053 609 fourteen 0,023 1025 13 0.59 391.69 1019 652 fifteen 0,023 989 13 0.66 390.30 985 696 16 0,023 953 13 0.73 391.07 952 739 17 0,023 918 13 0.80 393.68 920 783 eighteen 0,023 884 13 0.89 397.87 889 826 19 0,023 851 13 0.97 403.44 1099 480 12 0,025 1075 13 0.45 416.90 1070 520 13 0,025 1044 13 0.50 408.93 1039 560 fourteen 0,025 1011 13 0.55 403.99 1007 600 fifteen 0,025 977 13 0.61 401.64 975 640 16 0,025 943 13 0.68 401.53 943 660 17 0,025 909 13 0.75 403.33 912 720 eighteen 0,025 876 13 0.82 406.79 882 760 19 0,025 844 13 0.90 411.69 1080 444 12 0,027 1056 13 0.42 430.98 1054 481 13 0,027 1028 13 0.47 421.94 1025 519 fourteen 0,027 997 13 0.52 416.01 995 556 fifteen 0,027 965 13 0.58 412.75 965 593 16 0,027 933 13 0.64 411.79 934 630 17 0,027 900 13 0.70 412.82 905 667 eighteen 0,027 869 13 0.77 415.57 876 704 19 0,027 838 13 0.84 419.82 848 741 twenty 0,027 808 13 0.92 425.36

Claims (2)

1. A tongue-and-groove wall formed of metal elements of an I-shaped cross-sectional shape, each of which has two shelves symmetrically relative to the axis of the wall and parallel to it and in the center, rigidly interconnected by a wall located at right angles to the shelves, and on the longitudinal edges of each shelves are made enclosing - in the form of a cage or enormous - in the form of cams locking elements, the connection of which by means of cams into the cages made the union of adjacent metal elements into a tongue a wall with the formation of closed cavity cells in it, characterized in that two clips are made on one of the shelves of each metal element, and two cams are made on the opposite shelf, the centers of the cams being located on lines parallel to the axis of the metal element and passing through the clips in sections with the maximum cavity height, and all the locking elements are located on the inner surfaces of the shelves facing the axis of the sheet pile wall, while the ratio of the width of the shelf to the width of the wall of the metal element is maintained about in the range from 0.6 to 0.8 for a metal element with a ratio of the thickness of the shelf to its width in the range from 0.020 to 0.0225 and from 0.55 to 0.7 for a metal element with the ratio of the thickness of the shelf to its width within from 0.0225 to 0.025. 2. The sheet pile wall according to claim 1, characterized in that at least part of the cells and / or cavities in which the locking elements are located is filled with hardening material, for example concrete.

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